LAUSR.org creates dashboard-style pages of related content for over 1.5 million academic articles. Sign Up to like articles & get recommendations!

A cleaner vanadium extraction method featuring non-salt roasting and ammonium bicarbonate leaching

Photo from wikipedia

Abstract A cleaner method featuring non-salt roasting and ammonium bicarbonate leaching has been studied for the extraction of vanadium from vanadium slag. Compared to the traditional alkaline salt roasting followed… Click to show full abstract

Abstract A cleaner method featuring non-salt roasting and ammonium bicarbonate leaching has been studied for the extraction of vanadium from vanadium slag. Compared to the traditional alkaline salt roasting followed by water leaching process, chromium spinel in the raw vanadium slag will not be converted to carcinogenic chromate salts and exhaust gas will not be produced in the non-salt roasting process. The soluble salt, NH 4 VO 3 , can be easily crystallized directly by cooling. The wastewater from vanadate precipitation can be recycled in the leaching process. The leaching residue can be comprehensively utilized in conjunction with an iron-making process. The oxidation mechanisms of vanadium spinel were analyzed using XRD and SEM-EDS. Additionally, the effects of leaching variables, including ammonium bicarbonate concentration, roasted vanadium slag particle size, and leaching temperature, were examined. Finally, the leaching thermodynamics and leaching kinetics have been studied.

Keywords: non salt; salt roasting; ammonium bicarbonate; salt

Journal Title: Journal of Cleaner Production
Year Published: 2017

Link to full text (if available)


Share on Social Media:                               Sign Up to like & get
recommendations!

Related content

More Information              News              Social Media              Video              Recommended



                Click one of the above tabs to view related content.